Time was I'd have given anything for a
FS3, but at this point I'd be firmly against it.
It couldn't possibly live up to expectations. People have had over 20 years to come up with their own ideas of what it should be, it won't match them. I very much doubt I'd enjoy an FS3 as much as I enjoyed Sync, Transcend, Homesick, Derelict or Sol: A History, since I don't enjoy most new games as much as I enjoyed them.
We already know pretty much what was planned for it through the interview with Jason Scott. Anything on top of that is an original idea that's really no more of a valid conclusion to the events of FS2 than anything the community has come up with.
The reason the community has lasted as long as it has is the open-ended nature of FS2. There's so much of it that's left open in the story - what happens after Capella, what happens to the refugees, how does the GTVA hold together, what happens when Sol is brought back into the fold, what was Bosch's agenda. Those questions unlikely to be answered in a satisfactory manner, look at any TV show that's raised loads of mysteries, Lost for example, how many of them get answered and leave everyone happy? How many have people pissed off because their pet theory didn't come true?
More importantly, definitive answers to any of these questions, and presumably a definitive conclusion to the war with the Shivans, would greatly reduce the scope for what new campaigns can explore. Right now you can do anything and it's as valid a conclusion to the story as anything else.
Most importantly, if it came out I would absolutely have to play it despite all the stuff I've just said, and to do that I'd have to buy a gaming PC, which I cannot afford.